A film like this is special to me because it celebrates someone whose life's work keeps on giving long after they have gone. According to the Wikipedia article
on it, the film was begun in Jerome Kern's lifetime, though he didn't live to see it completed. Sure it was highly fictionalized, and produced to make money and promote MGM, but it was still an awesome way to express appreciation for a creative talent who produced so much that we can still enjoy.
Filled with eye candy (costumes and staging in the grand tradition of the big production musicals of the time), and with a cast of stars to perform Mr. Kern's songs, there is already plenty to like. But wait…there's a story, too! Sam Goldwyn is said to have remarked, "If you want to send a message, use Western Union." Nevertheless, the scenes where Sally Hessler learns some tough lessons about the meaning of character—and uses them to turn her life around—has more to say to us now than ever before. Though this film may at first appear to be light and fluffy, it definitely has substance underneath.
one of the musicals that figures prominently in this film, is also available here on IA.